package com.itheima.service.impl;

import com.alibaba.dubbo.config.annotation.Service;
import com.itheima.constant.MessageConstant;
import com.itheima.entity.Result;
import com.itheima.mapper.MemberMapper;
import com.itheima.mapper.OrderMapper;
import com.itheima.mapper.OrderSettingMapper;
import com.itheima.pojo.Member;
import com.itheima.pojo.Order;
import com.itheima.pojo.OrderSetting;
import com.itheima.service.OrderService;
import com.itheima.utils.DateUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.transaction.annotation.Transactional;

import java.util.Date;
import java.util.List;
import java.util.Map;

@Service(interfaceClass = OrderService.class)
@Transactional
public class OrderServiceImpl implements OrderService {
    @Autowired
    private MemberMapper memberMapper;
    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private OrderSettingMapper orderSettingMapper;
    @Override
    public Result order(Map map) throws Exception {
       // 1、检查用户所选择的预约日期是否已经提前进行了预约设置，如果没有设置则无法进行预约
        String orderDate = (String) map.get("orderDate");
        Date date = DateUtils.parseString2Date(orderDate);
        OrderSetting orderSetting = orderSettingMapper.findByOrderDate(date);
        if(orderSetting==null){
            return new Result(false, MessageConstant.SELECTED_DATE_CANNOT_ORDER);
        }
        // 2、检查用户所选择的预约日期是否已经约满，如果已经约满则无法预约
        int number = orderSetting.getNumber();
        int reservations = orderSetting.getReservations();
        if(number<=reservations){
            return new Result(false,MessageConstant.ORDER_FULL);
        }
        // 3、检查用户是否重复预约（同一个用户在同一天预约了同一个套餐），如果是重复预约则无法完成再次预约
        String telephone = (String) map.get("telephone");
        Member member = memberMapper.findByTelephone(telephone);
        if(member !=null){
            String setmealId = (String) map.get("setmealId");
            Order order=new Order(member.getId(),date,Integer.parseInt(setmealId));
            List<Order> orderList = orderMapper.findByCondition(order);
            if(orderList!=null && orderList.size()>0){
                return new Result(false,MessageConstant.HAS_ORDERED);
            }
        }else {
            // 4、检查当前用户是否为会员，如果是会员则直接完成预约，如果不是会员则自动完成注册并进行预约
            member=new Member();
            member.setName((String) map.get("name"));
            member.setIdCard((String) map.get("idCard"));
            member.setPhoneNumber(telephone);
            member.setSex((String) map.get("sex"));
            member.setRegTime(new Date());
            memberMapper.add(member);
        }
       // 5、预约成功，更新当日的已预约人数
        Order order = new Order();
        order.setMemberId(member.getId());
        order.setOrderDate(date);
        order.setOrderType((String) map.get("orderType"));
        String setmealId = (String) map.get("setmealId");
        order.setMemberId(Integer.parseInt(setmealId));
        order.setOrderStatus(Order.ORDERSTATUS_NO);
        orderMapper.add(order);

        orderSetting.setReservations(orderSetting.getReservations()+1);
        orderSettingMapper.editReservationsByOrderDate(orderSetting);
        return new Result(true,MessageConstant.ORDER_SUCCESS,order.getId());
    }

    @Override
    public Map findById(Integer id) {
        Map map = orderMapper.findById4Detail(id);
        if(map !=null){
            try {
                String orderDate = (String) map.get("orderDate");
                Date date = DateUtils.parseString2Date(orderDate);
                map.put("orderDate",date);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        return map;
    }
}
